Doo Shim transfers to Song Young High School, one of Korea's prestigious schools.

There is something wrong with the school; Doo Shim turns a blind eye to the awkwardness.

A deceased grandma comes back by possessing Woo Soo's body and warns that there is an evil spirit.

Woo Soo is deadly afraid of Doo Shim's world, but decides to go though it together with her.

The mock exam results come out; Woo Soo's only friend Il Nam is at the bottom of the class.

Doo Shim and Woo Soo are struggling to save Il Nam; to fight an evil spirit, Doo Shim finally reveals her mysterious ability that she desperately wanted to hide for a long time.